| Symptom | Description | |---------|-------------| | Engine derating | Power limited to ~30-50%, preventing PTO work or road travel. | | No throttle response | Pedal input ignored; engine idles or is stuck at fixed RPM. | | Gearbox fault | Transmission defaults to neutral or a single gear. | | Intermittent error | Code appears after washdown, rain, or rough terrain; may clear with key cycle. | | Multiple error codes | Often paired with L301, L305, or U101 (CAN network errors). |
If the error persists after changing filters and ensuring the fuel is clean, it may indicate a deeper issue with the fuel pump or the ECU's calibration. In these cases, an approved Valtra dealer can use advanced diagnostics to test the fuel system's actual versus requested pressure. VALTRA FAULT CODES valtra error code l302 link
A faulty pressure regulating valve at the end of the common rail can cause incorrect pressure readings or actual pressure loss. Low Battery Voltage: | Symptom | Description | |---------|-------------| | Engine
: This variant indicates a short circuit to ground (low voltage). Recommended Actions | | Intermittent error | Code appears after
: For detailed diagnostics, the tractor's Test Mode (Instruction 370/8 in the service manual) can be used to check the live function of the components.
in technical manuals) to verify component function before replacing expensive parts. Actionable Options Replacement Parts:
A malfunction in the sensor itself or its wiring harness can provide a false "low pressure" reading.